I have a 2011 Starcraft 20 ft pontoon with a 50 hp 4 cycle Merc big foot and it steers harder than any pontoon I have ever owned. It has a steering friction adjuster on the motor that I adjusted as loose as it would go and I also lubricated all the steering linkedge and greased the swivel bracket with merc grease. It only helped a little...What do I do? Only 30 hours on the rig.